Dump car



' 1,629 853 May s. D. WRIGHT DUMP CAR Filed 0ct.5, 1922 '7 Sheets-Sheet 1 May 9 s. D. WRIGHT DUMP GAR 1922 '7 Sheets-Sheet 2 Filed Oct. 5,

atbozmvyo 1927 s. D. WRIGHT DUMP CAR Filed Oct. 5. 1922 '7 Sheets-Sheet 3 gwuewto'c I May '24, 1927- D. WRIGHT DUMP CAR Filed Oct.5, 1922 Sheets-Sheet 4 May 24, 1927. s. D WRIGHT mm mi '7 Sheets-Sheet 5 F'il ed Oct. 5. 1922 DUMP CAR Filed Oct. 5. 1922 '7 Sheets-Sheet 6 S. D. WRIGHT DUMP CAR Filed Oct. 5, 1922 '7 Sheets-Sheet 7 H II Patented May 24, 1927.

UNITED STATES 1,629,853. PATENT; OFFICE.

SAMSON 'I). WRIGHT, OF CLEVELAND HEIGHTS, OHIO.

' DUMP CAR.

Application filed October 5, 1922. Serial 110 592616.. v

This invention relatesto improvements in nism for operating the bottom doors of a,

dump car, such as shown in my Patent No. 1,307,428 of June. 24, 1919, to which reference may be had for a fuller understanding of the present invention. V

More particularly, it is the object of the present invention to provide means for preventing accumulation of materials, such as ore and the like, upon the tracks of the door rollers; to provide means for closing the openings through which extend the shafts of the door rollers; and to provide sealing plates upon the roller shafts for rotatable movement therewith so as tov maintain the openings closed against materials in the car finding their way onto the roller tracks.

Another object of this invention is to provide means for automatically breaking the drive connection of the door opening mechanism when there is an obstruction to the closing of the doors; more particularly to provide a. slip clutch connection in the door operating shaft so as to prevent transmission of power to the doors whenever the gates become caught.

Another object consists inproviding a fluid motor means for operatin the doors which is so arranged as to afford a cushioning action for the piston of the fluid motor, furthermore to provide adjustable valves for the fluid motor so as to regulate the degree of cushioning effectupon the piston.

Other objects 'ofthis invention will appear from the following description and claims when considered in connection with the accompanying drawings.

Fig. 1 is a side elevation of one end portion of the car, parts being broken and in section; Fig. 2 is partly an end elevation and partly in section on line 22 of Fig. 1, the

doors being closed; Fig. 3is a detail view of one of the panels and parts associated there-' with; Fig. 4 is a view similar to Fig. 2 and shows the doors open; Figs. 5 and 6-are views similar to Figs. 4 and 2, respectively, but taken from the inside of the car; Figs. 7 and 8 are detail views of a sealing plate; Fig. 9 is an enlarged view of a part of Fig. 1; Figs. 10 and 11,,are detail views of the slip clutch connection; Fig. 12 is a viewsiinllar'to Fig. 1 but showing a modified form in which a cushioning means is provided;

Figs. 13 and 14 are detail views of the air cushioning device; and Fig. '15 is a view similar to Fig. (i but showing the modified arrangement.

The dump car, which is of the same general type a's that shown in my patent above referred to, comprisesinclined end walls 1 and side walls 2,"whi ch have their lower portions. also inclined'as indicated at3, the

inclined side and end wall portions terminating at side sills 4. The bottom part of the hopper of the dump car consists of panels 5, those pannels forming the end walls being provided with openings 6 'of'the particular form illustrated in the drawings for a particular purpose to be later explained. Suitable channel bars and I-beams are pro videdfor bracing the wall members of the car as well as suitable means for securing the same in the arrangement here illustrated. The car is provided with the usual truck 7 with wheels 8. A housing indicated in a general way by reference numeral. 9 is provided at each end of the bottom part of the hopper for the purpose of enclosing certain parts of the door operating mechanism. Near the bottom of inclined portions 3 of the side walls are pivoted links 10 which have their other ends pivoted at points 11 to the upper ends of doors 12. As clearly indicated in the drawings, these doors when closed are inclined toward the middle of the car and are adapted to be opened by moving their lower ends in a substantially horizontal plane. Suitably mounted upon the lower end portions of the doors are rollers 13 which have extensions 13 pivotally connected with links 14 and Mi -which in turn are pivotally connected to crank arms 15 and 15 respectively mounted upon shaft 16. This shaft is suitably supported in bracket 17 fixed to the car frame and has fixed thereon crank arm 18 which in turn has'pivotal connection with connecting link 19. Link 19 is pivoted to cranlearm 20 fixed upon shaft 21. which in turn has fixed thereon crank arm 22. Crank arm 22 is pivotally connected with arm 23 erence numeral 25, which in turn isoperated by main drive shaft 26. Shaft 26 has mounted thereon pinion 27 which meshes with gear 28 forming part of a slip clutch connection leading from reversible electric motor 29. The motor and other parts are supported upon a suitable extension from the side sills at the end of the car. Gear 28 is adapted to be clutched by frictional engagement between friction plates 30 of bronze, fiber, or other suitable material which engage upon their other faces with members 31 and 32.

Member 31 is fixedly mounted upon main operating shaft 26 of the motor, while mem ber 32 is keyed upon shaft 26 for lengthwise movement thereon. Spring tension is provided between members 31 and 32 by means of rods 34 which extend therethrough and one end portion of each rod is surrounded by spring 35 hearing against member 32 and washer retained by a nut 36.

Duplicate rollers 13 are provided at the two ends of the dump car hopper and are adapted to roll upon tracks 37 suitably secured upon the floor of housing .9.' 13 of the rollers are adapted to move along the upper edges of openings 6 which determine the limits of movement of the rollers while the inclined edges 6* of openings 6 prevent deposit of materials thereupon. The outer, end portions of tracks 37 are curved upwardly as clearly indicated in the drawings, so as to also serve as a means of limiting the rollin movement of the rollers.

bpacing bloc rs 38 are suitably secured at spaced intervals to the outer face of panels 5 and have secured on the'outer faces thereof channel bars 39 so as to provide slots between the spacing members for a purpose to be later explained. Plates 40 form a floor for housing '9 which has outer wall members 41. The side walls of housing 9 are, however, cut out as indicated at 42 to accommodate the movement of crank arm 18 therethrough.

As ameans of preventing accumulation of ore or other materials upon tracks 37, I have provided the sealing plates 43 upon the two ends of the shafts 13, these sealing plates being of the particular form illus-' trated in the drawings and being so situated as to have movement in the open ways between the spacing members 38. In other words, sealing plates 43 are located outside of panel members 5 between openings 6 and tracks 37 so as to protect the tracks against the deposit and accumulation of materials thereupon, thereby preventing any such hindrance to the operation of the rollers upon their tracks. Sealing plates 43 which are fixed upon shafts 13 have a rotary movement therewith, and are provided with teeth 43 for the purpose of cutting through any material which might accidentally become lod ed in the spaces between spacing blocks 38, such material then falling through these Shafts spaces. Suitably mounted upon the outer face of wall panels 5 are pins 43 which cooperate with slots 43 provided in sealing plates 43, so as to constitute a means of defining the movement of the sealing plates. Thus it will be seen upon reference to the drawings that during the opening and closingn'iovements of the doors as well as when the doors are standing either open or closed, sealing plates 43 entirely cover openings 6, so as to prevent escape of any of the materials from the car hopper to the tracksof thev rollers.

According to the modified form of my improved device, shaft 16 is provided with pinion 44 which is adapted to be actuated by rack 45meshing therewith; Rack 45 is connected with anddriven by piston rod 46 of piston 47 which constitutes part of a fluid motor. This motor is suitably mounted on the car frame and a particular combination and arrangement of air supply and discharge connections are providedv so as to afford a cushioning effect for. the piston as it nears the end of its stroke in either direction.

This will be clear from Figs. 13 and 14 in which the air or other fluid is supplied to or discharged from one side of the piston through pipe 48 and butterfly valve 49 is provided in branch supply pipe 50. On the other side of the piston there is provided pipe 51'through which air may be supplied or discharged, and a similar butterfly valve 52 is provided in branch supply pipe 53 so as to afford connection with the other'side of the piston. Upon air being supplied through pipe 48 so as to force the piston to the right, as viewed in Figs. 13 and 14, check valve 52 willbe closed so as to prevent discharge of air therethrough. In order to control the discharge of air from the right side of the piston, I have provided branch pipe 54 connecting the right-hand side of the piston with pipe 51, and in this pipe 54 there is provided valve 55 which can be set as desired so as to control the rate of discharge of air from the cylinder as the piston moves toward the right, as viewed in Fig. 13. Thus, as the piston moves in this direction, the air instead of being freely discharged will be discharged more or less slowly so as to effect a cushioning action for the piston as it approaches its end of travel, thereby easing up the action of the piston and preventing any pounding of the same against the end of the cylinder. Then upon changing the path of the air supply and discharge in the well known manner sons to force the piston toward the left, air issupplied to the cylinder through valve 52 and is prevented from escaping through valve 49, but is more or less gradually permitted to escape through valve 56 which, like valve 55, can be set in the position desired so as to create a cushioning effect for the piston. The connections teasers between shaft 16 and the, doors for opening and closing the, same are otherwise the same inthis modified form as in the first form above d s ribed. 1 r that I claim is H w s I 1. A dump car comprising a hopper body, doors for closing the ,bottom opening of said hopper, rollers connected to said doors, horizontally extending tracks for said rollers, means for operating said doors,- and automatically movable means free of connection to said doors for preventing deposit of the contents of the car upon said tracks at all times. j

2. A dump car comprising a hopper body, doors for closing the bottom opening of said hopper, rollers connected to said doors, horizontally extending tracks for said rollers, means for operating said doors, and automatically movable means free of connection to said doors for preventing deposit of the contents of the car upon said tracks.

3. A dump car, comprising a hopper body, doors for closing the bottom opening of said hopper, rollers connected to said doors, horizontally extending tracks forsaid rollers, means for operating said doors, and means movable with the doors asthe same are" opened or closed but free of connection thereto for preventing deposit of the contents of the car upon said tracks.

i. A dump car comprising a hopper body, doors for closing the bottom opening'of said hopper, rollers connected to said doors, horizontally extending tracks for said rollers, means for operating said doors, and rotatable seal plates having operative connection Y with said rollers for preventing deposit of the contents of the car upon said tracks.

5. A dump car com n-ismg a hopper body, doors for closing the bottom opening of said hopper, roller shafts extending through openings in the walls of said body, rollers on said shafts and connected to saiddoors, horizontally extending tracks for said rollers, means for operating said doors, and seal plates for said body openings, whereby the contents of the car are prevented from collecting upon said tracks. i

6. A dump car comprising a hopper body, doors for closing the bottom opening of said hopper, roller shafts extending through the walls of said body, rollers on said shafts and connected to said doors, horizontally extending tracks for said rollers, means for operating said doors, and seal plates having.

movement corresponding to the movements oi said doors for preventing deposit of the contents of the car upon said tracks.

7. A dump car comprising a hopper body, doors for closing the bottom opening ofsaid hopper, roller shafts extending through the w walls 01 said body, rollers on said shafts and connected to said doors, horizontally extending tracks for said rollers, means for operating said d oors,van d seal plates mounted upon said roller shafts between the walls of the hopper and said tracks i and adapted for movement with said doors, whereby the contents ofhe car are prevented fromcollecting uponsaidtracks.

8. A dump car comprisinga hopper body, doors for closing the bottom opening of said hopper, roller shattsjextending through the walls of saidbody, rollers on said shafts and connected to said doors', horizontally'extending tracks forsaid rollers, means for operating said doors, and seal plates having cutting edge portions mounted upon said roller shafts between the walls of the hopper and said tracksand adapted for movement with said doors, whereby the contents of the car are prevented from collecting upon said tracks. 1 r

9. A dump car comprising a hopper body, doors'ior closing the bottom opening of said hopper, opposite walls of said body having elongated openings, rollers on said shafts and connected to said doors, horizontally extending tracks for saldrollers, means for operating said doors, and means free of connection to said doors for maintaining said'elongated openings closed during the operation of said doors, whereby the contents of the car are prevented from collecting upon said-tracks.

'10.- A dump car comprising a hopperbody,

doors for closing the bottom opening of said hopper, rollers connected to said doors, horizontally extending. tracks for said rollers, and door operating means including a fluid actuated piston, said operating means being provided with adjustable means for cn'shioningthe piston.

11. A dump car comprising hopper body, doors for closing. the bottom opening of said hopper, rollers connected to said doors, horizontally extending tracks for said rollers, and door operating means including a fluid actuated piston, said operating means being provided with adjustable means for cushioning the piston upon both sides thereof.

12. A dump car, comprising a hopper body provided with abottom opening, a door for closing said bottom opening, a roller connected to said door, a substantially horizontally extending track for said roller, means for operating said door, and means having operative connection with said roller for preventing deposit of the contents of the 'ar upon said track.

v 13. A dump car, comprising a hopper body provided with a bottom opening, a door for closing said bottom opening; a roller connected to said door, a substantially horizontally extending track for said roller, means for operating said door, and rotatable means having operative connection with said roller for preventing deposit of the contents of the car upon said track.

A dump car, comprising a hopper body provided with a bottom opening, a door for closing said bottom opening, a roller .connected to said door, 'a, substantially horizontally extending track for said roller, 5 means for operating said door, and seal plates having operative connection With said roller for preventing deposit of the contents of the our upon said track.

15. A dump car, comprising a hopper body 10 having a bottom opening, a door for closing said opening, a roller associated with said door, a substantially horizontally extending track for said roller, door operating means, and means having a cutting edge portion for preventing the deposit of the contents of 15 V the car upon said track. 7

In testimony whereof I hereby aihx'my signature. '7

SAMSON D.- WRIGHT. 

